指定銘柄・期間の価格範囲を取得
AI agents call get_price_range to retrieve information from Market Index MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a straightforward data retrieval operation on historical market index information. It queries and returns price data for analysis purposes only. The blast radius of misuse is minimal—an agent cannot modify markets, execute trades, or cause irreversible harm by retrieving historical prices.
From the tool's definition Tool description translates to 'Get price range for specified symbol/period'. The tool retrieves historical market index data (price range) with no modification or execution capability.
Attacks that exploit this kind of access
指定銘柄・期間の価格範囲を取得. It is categorised as a Read tool in the Market Index MCP MCP Server, which means it retrieves data without modifying state.
Register the Market Index MCP server in PolicyLayer and add a rule for get_price_range: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Market Index MCP. Nothing to install.
get_price_range is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_price_range rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_price_range. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_price_range is provided by the Market Index MCP server (tamappe/market-index-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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